Preemption Namespace Registry
Session Initiation Protocol (SIP) Parameters
2005-10-18
2006-02-23
Preemption Namespaces
Standards Action
Cause=1
Preemption
UA Preemption
Cause=2
Preemption
Reserved Resources Preempted
Cause=3
Preemption
Generic Preemption
Cause=4
Preemption
Non-IP Preemption